公开(公告)号：US5991811A

公开(公告)日：1999-11-23

申请号：US707394

申请日：1996-09-04

申请人： Hideyuki Ueno ,  Yoshiharu Uetani ,  Tadahiro Oku ,  Mitsunori Omokawa ,  Yukio Kamatani ,  Tsuguhiro Hirose ,  Yoshimitsu Shimojo

发明人： Hideyuki Ueno ,  Yoshiharu Uetani ,  Tadahiro Oku ,  Mitsunori Omokawa ,  Yukio Kamatani ,  Tsuguhiro Hirose ,  Yoshimitsu Shimojo

IPC分类号： H04N7/173 ,  H04N21/21 ,  H04N21/2183 ,  H04N21/2225 ,  H04N21/23 ,  H04N21/234 ,  H04N21/44 ,  H04N21/472 ,  H04N21/482 ,  G06F13/00

CPC分类号： H04N21/21 ,  H04N21/2183 ,  H04N21/2225 ,  H04N21/23 ,  H04N21/23424 ,  H04N21/44016 ,  H04N21/47202 ,  H04N21/482 ,  H04N7/17336

摘要： An information transmit system includes a first communication element having a guaranteed quality required to transmit real-time information, and a second communication element different from the first communication element. The system also includes a transmission element for transmitting stored real-time information using the first communication element and for transmitting real-time data using the second communication element, where the real-time data using the second communication element has corresponding time stamps later in time than the real-time data transmitted by the first communication element. For example, a time stamp of the real-time data may be used to transmit the data in either a normal direction (using the first communication element), or in a retrospective direction (using the second communication element). The system also includes a storage element for storing the real-time data transmitted by at least the second communication element, and a switching element for monitoring a time stamp corresponding to the real-time data transmitted from the first communication element and a time stamp corresponding to the real-time data transmitted from the second communication element. The switching unit switches the output of the real-time information transmitted from the first communication element, to the output of the real-time data transmitted from the second communication element that is stored in the storage element, when the time stamp for reproducing the real-time data stored in the storage element has been reached.

摘要翻译： 信息发送系统包括具有发送实时信息所需的保证质量的第一通信元件和与第一通信元件不同的第二通信元件。 该系统还包括用于使用第一通信元件发送存储的实时信息并使用第二通信元件发送实时数据的传输元件，其中使用第二通信元件的实时数据具有稍后时间的相应时间戳 比由第一通信元件发送的实时数据。 例如，可以使用实时数据的时间戳在正常方向（使用第一通信元件）或回溯方向（使用第二通信元件）中发送数据。 该系统还包括用于存储由至少第二通信元件发送的实时数据的存储元件和用于监视与从第一通信元件发送的实时数据相对应的时间戳的开关元件和对应于 涉及从第二通信元件发送的实时数据。 当用于再现真实的时间戳时，切换单元将从第一通信元件发送的实时信息的输出切换到从存储在存储元件中的第二通信元件发送的实时数据的输出 存储在存储元件中的时间数据已经到达。

公开(公告)号：US4661950A

公开(公告)日：1987-04-28

申请号：US769027

申请日：1985-08-26

申请人： Hiroshi Kobayashi ,  Hideaki Haruyama ,  Tsuguhiro Hirose

发明人： Hiroshi Kobayashi ,  Hideaki Haruyama ,  Tsuguhiro Hirose

IPC分类号： H04L12/28 ,  H04J3/02 ,  H04J3/24

CPC分类号： H04L12/2801

摘要： An information transmission system in which a plurality of data terminal equipments (DTEs) are coupled with a communication medium through corresponding medium attachment units (MAUs). The DTE transmits and receives an information signal in a format having a preamble section including a predetermined bit pattern and a data section. The MAU modulates and demodulates the information signal. The MAU is arranged to replace part of the preamble with random data in order to quickly detect the collision of information signals from a plurality of DTEs on the communication medium.

摘要翻译： 一种信息传输系统，其中多个数据终端设备（DTE）通过相应的介质附接单元（MAU）与通信介质耦合。 DTE以具有预定比特模式和数据部分的前导码部分的格式发送和接收信息信号。 MAU调制和解调信息信号。 MAU被布置为用随机数据替换前导码的一部分，以便快速检测来自通信介质上的多个DTE的信息信号的冲突。

公开(公告)号：US4596011A

公开(公告)日：1986-06-17

申请号：US563248

申请日：1983-12-19

申请人： Hiroshi Kobayashi ,  Tsuguhiro Hirose ,  Hideaki Haruyama

发明人： Hiroshi Kobayashi ,  Tsuguhiro Hirose ,  Hideaki Haruyama

IPC分类号： H04B3/10 ,  H04L12/28 ,  H04L27/10 ,  H04J3/02

CPC分类号： H04B3/10 ,  H04L12/2801 ,  H04L27/10

摘要： A local network, in which a plurality of data processors are coupled by modems to a communication medium, is disclosed. Each modem is arranged to shift a carrier frequency to a first and second frequency according to a digital signal from the associated data processor. In order to provide for reliable and quick detection of a collision of signals simultaneously transmitted from a plurality of modems to the communication medium, the difference between the first and second frequencies is set such that one cycle of a beat signal generated on the communication medium due to a collision of signals is not longer than one bit time length of the digital signal.

摘要翻译： 公开了一种其中多个数据处理器通过调制解调器耦合到通信介质的本地网络。 每个调制解调器被布置为根据来自相关联的数据处理器的数字信号将载波频率移位到第一和第二频率。 为了提供对从多个调制解调器同时发送到通信介质的信号的冲突的可靠和快速检测，第一和第二频率之间的差被设置为使得在通信介质上产生的差拍信号的一个周期到期 信号的冲突不超过数字信号的一位时间长度。

公开(公告)号：US5389737A

公开(公告)日：1995-02-14

申请号：US680379

申请日：1991-04-04

申请人： Hiroshi Kobayashi ,  Tsuguhiro Hirose ,  Hideaki Haruyama ,  Jiro Kano ,  Katsunari Kodachi ,  Yoshio Kojima ,  Humio Takeda ,  Toshihiko Muro

发明人： Hiroshi Kobayashi ,  Tsuguhiro Hirose ,  Hideaki Haruyama ,  Jiro Kano ,  Katsunari Kodachi ,  Yoshio Kojima ,  Humio Takeda ,  Toshihiko Muro

IPC分类号： E04F15/024 ,  G02B6/44 ,  H02G3/04 ,  H02G3/18 ,  H02G3/34 ,  E04B5/58

CPC分类号： G02B6/4451 ,  E04F15/02423 ,  E04F15/02435 ,  E04F15/0247 ,  E04F15/02476 ,  H02G3/185 ,  H02G3/285

摘要： A panel for free access to a signal cable and a power cable is installed on the floor of an office room and forms a network of signal cables in an office. The posts of this panel are mounted on the floor. A floor plate is secured to the upper ends of the posts. A rack plate is arranged between the floor plate and the floor, and the rack plate is secured to the posts. The height of the floor plate and the rack plate is adjusted by adjusting the engaging position by rotating a leg to be engaged with the threaded holes of the posts. The floor plates are composed of a plate made of glass, reinforced cement mixed with foamable styrol or an aluminum honeycomb structure. The rack plate is composed of a transparent polypropylene plate. Further, the surface of the floor plate is covered with a surface material such as a carpet. The signal cables are arranged in the space between the floor plates and the rack plates. The power cables are arranged in the space between the rack plates and the floor. Electronic components are mounted on the rack plates. Therefore, the power cables, the signal cables and the other electronic components are completely isolated from each other, and the modification of the layout of office automation equipment can be readily carried out by an authorized person.

摘要翻译： 在办公室的地板上安装一个免费使用信号电缆和电源线的面板，并在办公室内形成信号电缆网络。 该面板的柱子安装在地板上。 地板固定在柱的上端。 在地板和地板之间布置有一个齿条板，并且齿条板固定在柱上。 通过使腿部旋转以与柱的螺纹孔接合来调节接合位置来调节底板和齿条板的高度。 地板由玻璃制成的板，与可发泡苯乙烯混合的增强水泥或铝蜂窝结构体组成。 机架板由透明聚丙烯板组成。 此外，地板的表面被诸如地毯的表面材料覆盖。 信号电缆布置在地板和机架板之间的空间中。 电力电缆布置在机架板和地板之间的空间中。 电子元件安装在机架板上。 因此，电力电缆，信号电缆和其他电子部件彼此完全隔离，办公自动化设备布局的修改可以由授权人员轻松进行。

公开(公告)号：US4694453A

公开(公告)日：1987-09-15

申请号：US810092

申请日：1985-12-18

申请人： Hiroshi Kobayashi ,  Hideaki Haruyama ,  Tsuguhiro Hirose

发明人： Hiroshi Kobayashi ,  Hideaki Haruyama ,  Tsuguhiro Hirose

IPC分类号： H04Q3/62 ,  G06F13/372 ,  H04J3/06 ,  H04L12/28 ,  H04Q3/60 ,  H04Q3/64 ,  H04Q11/04 ,  H04J3/02 ,  H04J1/16

CPC分类号： H04Q11/04 ,  G06F13/372 ,  H04J3/0682 ,  H04L12/28

摘要： A time-division multiplexing communication network comprising a central station and a plurality of local stations, in which information signals are transmitted from the local stations to the central station on a time-division multiplexing basis, and the central station transmits information signals to the local stations on a time-division multiplexing basis. The central station sequentially requests that local stations transmit a test signal in order to prevent collision of transmission signals from the local stations. Each local station, of which a test signal transmission is requested, transmits the test signal to the central station. The central station sends back the test signal to the local station which transmitted this test signal. The local station measures transmission delay time from transmission to reception of the test signal, and adjusts transmission timing of the information signal to be transmitted to the central station based on the measured delay time.

摘要翻译： 包括中央站和多个本地站的时分复用通信网络，其中信息信号以时分多路复用为基础从本地站发送到中心站，中心站向本地发送信息信号 时分复用基站。 中央站顺序地请求本地站发送测试信号，以防止来自本地站的传输信号的冲突。 要求测试信号传输的每个本地站将测试信号发送到中心站。 中心站将测试信号发送回发送本测试信号的本地站。 本地站测量从发送到接收测试信号的传输延迟时间，并且基于测量的延迟时间来调整要发送到中心站的信息信号的发送定时。

公开(公告)号：US4617656A

公开(公告)日：1986-10-14

申请号：US814598

申请日：1986-01-02

申请人： Hiroshi Kobayashi ,  Tsuguhiro Hirose ,  Hideaki Haruyama

发明人： Hiroshi Kobayashi ,  Tsuguhiro Hirose ,  Hideaki Haruyama

IPC分类号： H04B3/04 ,  H04B3/10 ,  H04L12/28 ,  H04L27/10 ,  H04J1/02 ,  H04J3/12

CPC分类号： H04L12/2801 ,  H04B3/10 ,  H04L27/10

摘要： A plurality of information processors are coupled by respective modems to a communication medium at points thereof. Transmission and reception of information signals among the modems are effected through a headed located at a predetermined point on the communication medium. A pilot signal generator is provided which sends out a pilot signal having a predetermined reference level through the headend to the communication medium. Each modem is arranged to properly adjust the gain of its transmitting amplifier according to a reception level of the pilot signal for an improvement of signal transmission quality and a reliable detection of a signal collision.

摘要翻译： 多个信息处理器在其点处由相应的调制解调器耦合到通信介质。 调制解调器之间的信息信号的发送和接收通过位于通信介质上的预定点处的头部进行。 提供了一种导频信号发生器，其通过头端向通信介质发送具有预定参考电平的导频信号。 每个调制解调器被设置为根据导频信号的接收电平适当地调整其发射放大器的增益，以提高信号传输质量和可靠的信号检测。

公开(公告)号：US06438596B1

公开(公告)日：2002-08-20

申请号：US09394103

申请日：1999-09-13

申请人： Hideyuki Ueno ,  Yoshiharu Uetani ,  Tadahiro Oku ,  Mitsunori Omokawa ,  Yukio Kamatani ,  Tsuguhiro Hirose ,  Yoshimitsu Shimojo

发明人： Hideyuki Ueno ,  Yoshiharu Uetani ,  Tadahiro Oku ,  Mitsunori Omokawa ,  Yukio Kamatani ,  Tsuguhiro Hirose ,  Yoshimitsu Shimojo

IPC分类号： G06F15173

CPC分类号： H04N21/21 ,  H04N7/17336 ,  H04N21/2183 ,  H04N21/2225 ,  H04N21/23 ,  H04N21/23424 ,  H04N21/44016 ,  H04N21/47202 ,  H04N21/482

摘要： A video on demand system includes one or more hybrid fiber coax access networks connecting set top units to corresponding head end units. The head end unit for an access network is connected to an asynchronous transfer mode wide area network (ATM WAN). A hierarchical system of video servers, including at least one center server and at least one local server, or cache node, are also connected to the ATM WAN. When a user wishes to select a video, a service control unit coupled to the ATM WAN generates a selection list of proposed videos for which server and network resources are available to immediately serve the user-selected video. The service control unit determines whether server and network resources are available by sending separate queries to server and network resources management control units. Alternatively, the service control unit may generate the selection list based on whether the probability of a particular video being immediately served is greater than a threshold.

摘要翻译： 视频点播系统包括将机顶单元连接到对应的头端单元的一个或多个混合光纤同轴电缆接入网络。 用于接入网络的头端单元连接到异步传输模式广域网（ATM WAN）。 包括至少一个中心服务器和至少一个本地服务器或高速缓存节点的视频服务器的分级系统也连接到ATM WAN。 当用户希望选择视频时，耦合到ATM WAN的服务控制单元产生所提供的视频的选择列表，服务器和网络资源可用于该服务器和网络资源，以立即为用户选择的视频提供服务。 服务控制单元通过向服务器和网络资源管理控制单元发送单独的查询来确定服务器和网络资源是否可用。 或者，服务控制单元可以基于特定视频被立即服务的概率是否大于阈值来生成选择列表。

公开(公告)号：US06262986B1

公开(公告)日：2001-07-17

申请号：US08676964

申请日：1996-07-08

申请人： Yoshihiro Oba ,  Tsuguhiro Hirose

发明人： Yoshihiro Oba ,  Tsuguhiro Hirose

IPC分类号： H04L1256

CPC分类号： H04Q11/0478 ,  H04L2012/5651 ,  H04L2012/5679

摘要： A packet scheduling scheme capable of realizing a fair scheduling regardless of weights of connections. A packet scheduler has a plurality of packet queues for temporarily storing entered packets, to each of which a weight is set up; a packet input unit for entering packets into the packet queues; a scheduling information management unit for managing scheduling information for specifying an order to read out packets stored in the packet queues, according to a queue length of each packet queue and the weight set up for each packet queue; and a packet output unit for reading out and outputting desired packets from the packet queues according to the scheduling information. In a case of fixed length packets, the scheduling information management unit always holds as many scheduling information corresponding to one packet queue as a smaller one the queue length of that one packet queue and the weight set for that one packet queue, so as to make a processing time required for scheduling constant regardless of a number of connections.

摘要翻译： 一种能够实现公平调度的分组调度方案，而不管连接的权重。 分组调度器具有用于临时存储输入分组的多个分组队列，其中每个队列建立权重; 分组输入单元，用于将分组输入到分组队列中; 调度信息管理单元，用于根据每个分组队列的队列长度和为每个分组队列建立的权重，管理用于指定读出分组队列中存储的分组的顺序的调度信息; 以及分组输出单元，用于根据调度信息读出并输出来自分组队列的期望分组。 在固定长度分组的情况下，调度信息管理单元总是保持与一个分组队列对应的调度信息尽可能少的一个分组队列的队列长度和为该分组队列设置的权重，从而使 调度常数所需的处理时间，而不考虑多个连接。

公开(公告)号：US5887136A

公开(公告)日：1999-03-23

申请号：US691559

申请日：1996-08-02

申请人： Chikara Yasuda ,  Masahiro Takagi ,  Tsuguhiro Hirose ,  Narito Kimura ,  Ryuji Ito ,  Kazue Fujiwara

发明人： Chikara Yasuda ,  Masahiro Takagi ,  Tsuguhiro Hirose ,  Narito Kimura ,  Ryuji Ito ,  Kazue Fujiwara

IPC分类号： H04L29/06 ,  H04N7/15 ,  G06F17/00

CPC分类号： H04L65/4038 ,  H04L29/06 ,  H04N7/152 ,  H04L29/06027 ,  H04L69/24

摘要： A communication system housing a plurality of terminals capable of processing one or more media is provided with an available terminal information storage section for storing a terminal or terminals to be used for each user, an available media information storage section for storing a medium or media or a media realization scheme or schemes to be used for each terminal, a determination section for determining a combination of one or more media or one or more media realization schemes and a terminal combination of one or more terminals to be used by each user in accordance with the contents of the available terminal information storage section and the available media information storage section for each of users engaged in communications according to communication requests and a control section for controlling setting of call/connections based on the media combination and the terminal combination determined by the determination section.

摘要翻译： 提供一种能够处理一个或多个媒体的多个终端的通信系统，具有用于存储要用于每个用户的终端或终端的可用终端信息存储部分，用于存储媒体或媒体的可用媒体信息存储部分， 用于每个终端的媒体实现方案或方案，用于确定一个或多个媒体或一个或多个媒体实现方案的组合的确定部分以及每个用户将根据用户使用的一个或多个终端的终端组合 根据通信请求对从事通信的每个用户的可用终端信息存储部分和可用媒体信息存储部分的内容以及用于基于媒体组合控制呼叫/连接的设置的控制部分和由 确定部分。

公开(公告)号：US5253247A

公开(公告)日：1993-10-12

申请号：US746973

申请日：1991-08-19

申请人： Tsuguhiro Hirose ,  Toshikazu Kodama ,  Takashi Kamitake

发明人： Tsuguhiro Hirose ,  Toshikazu Kodama ,  Takashi Kamitake

IPC分类号： H04L12/813 ,  H04L12/815 ,  H04L12/823 ,  H04J3/14 ,  H04Q11/00

CPC分类号： H04L12/5602 ,  H04L2012/5614 ,  H04L2012/5632 ,  H04L2012/5636 ,  H04L2012/568

摘要： A traffic control method for controlling the traffic characteristics of fixed-length information units and transmitting the information units through a number of divided systems in a ATM communication network comprises a step for monitoring the information units to determine whether or not the information units are transmitted according to prescribed traffic characteristics at the inlets of a plurality of divided systems, a step for regulating the information unit which violates the prescribed traffic characteristics at the inlets of the divided systems, a step for monitoring the information units to determine whether or not the information units are transmitted according to prescribed traffic characteristics at the outlets of a plurality of divided systems, and a step for shaping the information unit which violates the prescribed traffic characteristics at the outlets of the divided systems.